Rock and ore pulverizer



Nrrnn STATES CARLUS C. BIRUM, OF UTLEY, YYISCONSIN, ASSIGNOR TO THE GREEh. LAKE GRANITE COMPANY, OF CHICAGO, ILLINOIS.

ROCK AND ORE PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 559,433, dated May 5, 1896.

Application filed March 1, 1895. Serial No. %,219. (No model.)

To aZZ whom it may concern: motion of the drive-wheel A is communicated Be it known that I, CARLUS C. BIRUM, a through the shaft A, bevel-gearing B and B, citizen of the United States, residing at Utley, and upright shaft C to the rotatable disk D, in the county of Green Lake and State of Wissurrounded by a perforated plate or screen 5 cousin, have invented new and useful Im- E, through which the crushed material is perprovements in Rock and Ore Pulverizers, of mitted to escape. which the following is a specification. F are the crusher-rollers rotating on the My invention relates to improvements in shaft G and resting on the upper surface of those forms of rock and ore pulverizers in the disk D; but I do not claim these parts as 10 which the rock or ore is crushed between a my invention, having limited my claims to rotating disk and heavy crushing-rollers restthe specific improvements in the construction ing thereon, and pertains especially to the of the crusher rollers, as hereinafter deconstruction of the rim or periphery of the scribed. crushing-rollers, as hereinafter described. The periphery of my improved crusher is I5 The practice heretofore has been to provide covered by a series of blocks I, which, taken the crushers with a smooth-faced removable together, form a sectional rim surrounding rim, which requires to be frequently removed, the solid portion of the crusher. These secowing to the rapid wear of the crushing-surtions are preferably made thinner at their face. In grinding hard stones these rims meeting edges than at their center, thus hav- 7o 20 have to be renewed as often as once in three ing the appearance of blunt cogs (best shown weeks, and as the machine has to be taken in Figs. 2 and 5) as viewed from the side. apart in order to 'do this the delay and ex- The blocks I are attached to the body of pense occasioned thereby are considerable. the crusher by means of the bolts J, the heads Another objection to the rims heretofore used of which are countersunk in the blocks, one 7 5 2 5 is that the pulverized stone tends to form "a at each end of each block, and which project bed or solid track on which the crushers are into the recesses K, formed in the side of the supported, which materially interferes with solid portion of the crusher and adapted to the action of the rollers in crushing. permit the nuts to be adjusted 011 the project- The object of my invention is, therefore, ing ends of the bolts. o first, to provide a sectional rim composed of The recesses K are preferably triangularly removable sections which can be renewed formed, as shown in Fig. 5, thus removing without taking the machine apart; second, to but little of the metal and not materially reprovide for working up the fragments of stone ducing its strength. constituting the so-called fbed, so as to fa- It is obvious that my improvement can be 3 5 cilitate crushing them as rapidly as possible. applied either to the solid central portion of In the drawings, Figure 1 is a side elevathe wheel, as shown in Fig. 2, or that it can tion of my pulverizer to which my improvebe applied in' addition to the smooth rims ment is applied. Fig. 2 is a side view of my heretofore used, the recesses K being in the improved crusher-rollers. Fig. 3 is a front latter case formed in the rim. It will also be 40 view of the same. Fig. 4is an enlarged crossobserved that the sectional blocks can be resectional view of the rim, drawn on the line moved independently and replaced with new i i of Fig. 1.. Fig. 5 is a partial side view of ones when worn out or broken, and that the a crushing-roller, showing my invention appeculiar form of the blocks will penetrate and plied to the smooth-faced removable rim herestir up the material upon the disk D. Owing 9 5 5 tofore used. Fig. 6 is a view of the concave to the corrugated shape of the surface, the

under surface of the portion above the secbearings at the points of contact are more intion-line a: w of Fig. 5. tense than when distributed over the larger Like parts are identified by the same refsurface of a smooth periphery. erence-letters throughout the several views. Having thus described my invention, what mo 50 The rock and ore pulverizer shown in Fig. I claim as new, and desire to secure by Letters 1 is one of the forms in ordinary use. The Patent, is-

In a rock and ore pulverizer, a crushingroller, consisting of the combination of the body portion provided with the triangular recesses K in its sides near the periphery, and bolt-holes leading from the periphery into said recesses, With the removable rim, formed in sections I, and having bolt-holes adapted to correspond With the bolt-holes in said body portion, together with the bolts for securing said rim-sections in place, substantially as IO described.

In testimony whereof I affix my signature in the presence of two Witnesses.

CARLUS C. BIRUM. Witnesses:

J ACOB ALLEN, J. W. HALL. 

